The 2015 Oscars is Hollywood's biggest night -- and the stars are banding together to encourage the hashtag #AskHerMore in order to end sexist red carpet questions.

As the celebs arrive on the Oscars red carpet, the #AskHerMore hashtag is already trending on Facebook -- thanks, in part, to Reese Witherspoon's support of the movement.

The Wild star -- who is nominated for Best Actress tonight -- posted a picture filled with thought-provoking questions like "What's the biggest risk you've taken that you feel has paid off?" and "What accomplishment are you most proud of?"

"It's meant to inspire reporters to ask creative questions on the red carpet," Witherspoon wrote about the hashtag. "I love the Oscars AND fashion like many of you - & am excited to share ‪#‎WhoAmIWearing‬ later tonight. (not yet!!) But I'd also love to answer some of these Qs…"

The campaign was started by the Representation Project in February 2014 and has been gaining momentum ever since. The Hollywood Reporter writes that at this year's SAG Awards, Reese Witherspoon, Jennifer Aniston and Julianne Moore all refused to show their manicures on E!'s mani-cam. Of course, this comes after Elisabeth Moss gave the camera the middle finger at the 2014 Golden Globes and Cate Blanchett famously looked into a different cam -- one was panning down the length of her dress -- to ask if they "do that to the guys." (The network is not using the mani-cam this year.)

Still, the campaign is not without controversy. Many are wondering if it is inherently sexist to discuss high-end, designer fashion on one of the most fashion-forward nights of the year (particularly with women, who do have much more variety in their ensembles than men in their tuxedos). In fact, the Hollywood Reporter points out that when Ryan Seacrest attempted to eliminate the famous "Who are you wearing?" question five years ago, the New York Times criticized him immensely, even going so far as to ask if he needed "a lesson in fashion reporting."